Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
To relieve his hard-pressed native town, Iudacilius appeared before Asculum with the Picentine levy and attacked the besieging army, while at the same time the garrison sallied forth and threw itself on the Roman lines. It is said that 75,000 Romans fought on this day against 60,000 Italians. Victory remained with the Romans, but Iudacilius succeeded in throwing himself with a part of the relieving army into the town. The siege resumed its course; it was protracted(17) by the strength of the place and the desperate defence of the inhabitants, who fought with a recollection of the terrible declaration of war within its walls.
17. Leaden bullets with the name of the legion which threw them, and sometimes with curses against the "runaway slaves"--and accordingly Roman--or with the inscription "hit the Picentes" or "hit Pompeius"-- the former Roman, the latter Italian--are even now sometimes found, belonging to that period, in the region of Ascoli.
When Iudacilius at length after a brave defence of several months saw the day of capitulation approach, he ordered the chiefs of that section of the citizens which was favourable to Rome to be put to death under torture, and then died by his own hand. So the gates were opened, and Roman executions were substituted for Italian; all officers and all the respectable citizens were executed, the rest were driven forth to beggary, and all their property was confiscated on account of the state.
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Reference address : https://www.ellopos.net/elpenor/rome/4-07-sulpician-revolution.asp?pg=45